Population ageing in Poland in the light of the results of the 2021 Census is another publication prepared on the basis of the results of the 2011 and the 2021. This thematic study presents the changes that have taken place over the past decade in terms of the state and structure of the population, with a particular focus on the elderly group. A characterisation of the population by social characteristics such as marital status, level of education and incidence of disability was also made. The study also contains information on households containing older people - including those over 65 years.